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Behind the Business – How a Local Accountancy Firm Cut Phone Costs by Switching to VoIP

Jul 17, 2026

At ABC Service, we believe that technology should be a tool that empowers your business, not a hurdle that slows you down. Recently, we had the pleasure of working with a busy accountancy firm based right here in the heart of the Tavistock and Plymouth area. Like many professional service providers, their business relies heavily on clear, consistent communication with clients, especially during the frantic weeks of tax season.

However, their existing setup was beginning to show its age. They were facing rising monthly bills, crackly lines, and a growing concern about the upcoming national changes to the UK’s telephone network. This is the story of how they modernised their communications and, in the process, significantly reduced their overheads.

Behind the Business – How a Local Accountancy Firm Cut Phone Costs by Switching to VoIP

The Looming Deadline – Understanding the PSTN Switch-off

Before we dive into the firm's specific challenges, it is important to understand the "Big Switch Off" that is currently affecting every business in the UK.

For decades, we have all relied on the PSTN (Public Switched Telephone Network). This is the traditional copper-wire network that has powered our landlines since the Victorian era. However, this old technology is being retired. By early 2027, the PSTN will be switched off entirely, meaning every business currently using a traditional landline or certain types of broadband will need to move to a digital alternative.

Infographic showing the transition from old copper pstn lines to modern digital voip signals

For our accountancy firm, this wasn't just a technical footnote; it was a looming deadline. If they didn’t act, they risked losing their main office numbers and the ability to make calls entirely. They needed a future-proof solution, and they needed it to be reliable.

Legacy Systems, High Costs, and Static Desks

When we first sat down with the firm's partners, the frustrations were clear. Their old system was "on-premise," meaning it relied on a physical box on the wall and expensive individual line rentals for every single phone.

  • Financial Drain: They were paying for multiple analogue lines they barely used, alongside high maintenance costs for their ageing hardware.
  • Poor Call Quality: During busy periods, staff reported echoey calls and occasional dropouts, which is far from ideal when discussing sensitive financial data with a client.
  • Tethered to the Office: Their staff are often out at client sites for audits or working from home. With their old system, if they weren't sitting at their specific desk in the office, they missed the call.
  • Lack of Flexibility: Adding a new extension for a seasonal intern involved a call-out and physical wiring changes.

They knew they needed a change, but like many SMEs, they were worried about the disruption a transition might cause. As a local broadband provider in Devon, we knew we could make the process seamless.

Finding the Right Fit – The Swift Eve Solution

After assessing their current infrastructure and their team's working habits, we recommended the Swift Eve VoIP system.

For those unfamiliar with the term, VoIP (Voice over Internet Protocol) simply means making and receiving phone calls over the internet rather than through traditional copper wires. It converts your voice into digital "packets" and sends them across your business broadband in Devon, providing crystal-clear audio and a wealth of features that traditional phones simply cannot match.

Abc service storefront in tavistock, showing our local presence for it and telecom support

The Swift Eve platform was the perfect choice for this accountancy firm for several reasons:

  1. Exceptional Call Protection: Security is paramount for accountants. Swift Eve includes built-in fraud protection that monitors call patterns and blocks suspicious activity, ensuring their billing remains predictable and secure.
  2. The Eve UC App: This was the "game-changer." It allowed staff to take their office extension with them on their smartphones or laptops. Whether they are in a client’s boardroom or their own living room, they can make calls showing the office number.
  3. Predictable Monthly Costs: By moving to a hosted solution, they could ditch the expensive line rentals and move to a simple, per-user monthly fee that included thousands of minutes to UK landlines and mobiles.

A Smooth Transition – Minimal Disruption

We understand that for an organisation managing client deadlines, downtime is not an option. Our team at ABC Service handled the entire migration. We ported their existing, well-known business numbers over to the new digital platform so they didn't have to change their stationery or inform every client of a new number.

The installation was fast. Because VoIP runs over the internet, we didn't need to trail new wires through the office. We simply provided high-quality VoIP handsets that plugged directly into their existing internet ports. For their remote workers, it was as simple as downloading an app and logging in.

We also ensured their business telecoms in Okehampton and surrounding areas were supported by a robust internet connection, as a reliable VoIP system is only as good as the broadband it runs on. By optimising their internal network, we guaranteed that their voice traffic would always take priority, preventing any "jitter" or lag during calls.

The Result – A Modern, Mobile, and More Profitable Practice

Six months after the switch, the feedback from the firm has been fantastic. They have realised several immediate benefits that have improved their day-to-day operations.

  • Significant Cost Savings: By eliminating old-fashioned line rentals and consolidating their services, the firm has seen a reduction in their monthly telecoms spend of nearly 40%.
  • Enhanced Client Experience: Features like an "Auto-Attendant" (a professional greeting menu) ensure that clients are directed to the right department: tax, payroll, or audit: immediately, without being bounced around manually.
  • Hybrid Working Success: The team now enjoys a truly hybrid office environment. Staff can collaborate via the Eve desktop app, see who is "busy" or "available" at a glance, and never miss a client enquiry.
  • Scalability: When the firm took on two new trainees last month, we were able to add their extensions remotely in minutes. No engineers, no new wires, and no hassle.

A professional using the swift eve mobile app to stay connected while on the move

Why Local Support Matters

Choosing a local broadband provider in Devon made a difference for this firm. Unlike national "call-centre" providers, they knew they could pop into our Tavistock shop or pick up the phone and speak to a person they actually know.

We take pride in being a responsible local partner. We don't just "sell and forget"; we provide ongoing support to ensure everything continues to run smoothly. Whether it's a quick question about a handset feature or an update to their call routing, we are just around the corner.

Summary and Takeaway

The transition from an outdated PSTN system to a modern VoIP solution is no longer just a "nice to have": it is a necessity for business continuity. For this local accountancy firm, it was an opportunity to shed unnecessary costs and embrace a more flexible way of working.

Key Takeaways for Your Business:

  • Don't wait until 2027: The PSTN switch-off is happening now, and waiting until the last minute could lead to delays or service loss.
  • VoIP is about more than just calls: It's a tool for remote working, better client service, and enhanced security.
  • Local expertise is invaluable: Working with a provider who understands the local infrastructure in Devon and Cornwall ensures a smoother, more personal experience.

Friendly abc service team member ready to help with business tech solutions

If you are concerned about your current phone system or want to see how much you could save by switching to VoIP phone systems in Devon, we are here to help. Our team can perform a quick audit of your current setup and provide an honest, jargon-free recommendation.

Keeping your business connected is what we do best. Feel free to explore our business IT support options or get in touch with us today to start your digital transformation.

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